1)- Sandra Poikane, Rob Portielje, Luc Denys, Didzis Elferts, Martyn Kelly, Agnieszka Kolada, Helle Mäemets, Geoff Phillips, Martin Søndergaard, Nigel Willby, Marcel S van den Berg. Macrophyte assessment in European lakes: Diverse approaches but convergent views of 'good' ecological status.Ecological indicators. 2018, 94: 185-197